Acier vs Pewter Tankard
Both from Sherwin-Williams's palette. Hue-wise, Acier belongs to the grey family and Pewter Tankard to the greige-grey family. They have nearly identical light reflectance values (32 vs 33), so they'll read as similarly Medium in most lighting conditions. Acier runs neutral while Pewter Tankard is decidedly warm, which means they'll respond very differently to warm vs cool light sources. At ΔE 2.3, these are close — the kind of difference that matters when choosing between them, but doesn't read strongly in a finished room. Below you'll find 3 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Acier vs Pewter Tankard in Real Spaces
3 real rooms side by side. Acier and Pewter Tankard are close enough that the difference can be hard to judge from a chip alone — these photos show how each reads at scale, across different spaces and lighting conditions.
Living Room
In a living room, color works across both daylight and evening light — the same wall can read very differently at noon and at 8pm. The temperature contrast between Pewter Tankard and Acier is what sets these apart most in this context.
House
Seen across an entire facade, subtle tonal differences become pronounced. What reads as nearly the same on a chip often reads as clearly different at scale. Pewter Tankard brings more warmth to the space, while Acier keeps things cooler and crisper.
Kitchen Cabinets
Kitchen cabinets are constantly compared against adjacent materials, which means subtle differences between these two become much more visible. Pewter Tankard brings more warmth to the space, while Acier keeps things cooler and crisper.
Color Details
Acier vs Pewter Tankard Simulated Comparison
5 simulated room previews — drag the slider on each to see Acier on one side and Pewter Tankard on the other.
Digital color is approximate. These simulations are generated from the manufacturer's hex values and overlaid on grayscale room photos — your screen's calibration, brightness, and viewing angle all affect how they render. Before committing to either color, test physical samples in your own space under the light you actually live with.